<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
    <div id="app">
        <mycom2></mycom2>
    </div>

    <script>
        Vue.component('mycom2', {
            // 组件的模板，必须有且只有一个根元素
            template: `<div>
            <h3>这是直接使用Vue.component 创建出来的组件</h3>
            <span>123</span>
            </div>`
        });
        var vm = new Vue({
            el: '#app',
            data: {

            }
        })
        
    </script>
</body>
</html>